Dr. Chang is a licensed Internal Medicine in CA. Graduated in 2011. Medical degree obtained from Northwestern University School of Medicine. Completed residency training at University of Wisconsin. Currently practices at Kaiser Permanente (Kaiser Permanente), located at 2500 Merced St, San Leandro, CA 94577. Dr. Chang specializes in internal medicine and primary care.. In addition to English, Dr. Chang speaks Mandarin and Cantonese.